# Ocean Color Monitor 3
*sensor . products*

Ocean-colour passive optical payload flown on EOS-06 / Oceansat-3.

## Specifications
- **product status**: operational
- **deployment context**: orbital
- **manufacturer**: isro
- **sensor**: {"instrument_family":"passive-optical","measurement_principle":"passive","spec_disclosure":"undisclosed"}
- **entity type**: sensor
- **last verified date**: 2026-06-16
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: isro
- **attributes**: {"kind":"sensor","product_status":"operational","deployment_context":"orbital","manufacturer":"isro","description":"Ocean-colour passive optical payload flown on EOS-06 / Oceansat-3.","sensor":"{\"instrument_family\":\"passive-optical\",\"measurement_principle\":\"passive\",\"spec_disclosure\":\"undisclosed\"}"}
- **relevance**: in-scope

## Editorial
Ocean Color Monitor 3 is the passive optical VNIR ocean-colour multispectral radiometer carried on EOS-06 / Oceansat-3.[^isro-eos-06][^isro-iocs-ocm3-2025] It provides 13 optical bands at 360 m spatial resolution over a 1400 x 1400 km swath.[^isro-iocs-ocm3-2025][^ceos-isro-2018] The current post-launch spectral envelope is 402-1020 nm, with band centers from 412 to 1010 nm; earlier planning material used 407-1020 nm for the same instrument family.[^isro-iocs-ocm3-2025][^ceos-isro-2018] OCM-3 continues the Oceansat ocean-colour record after OCM-1 and OCM-2, while adding optical bands used for fluorescence and atmospheric-correction applications.[^isro-eos-06][^isro-iocs-ocm3-2025] Its demonstrated use includes ocean-colour water-leaving radiance retrieval on Oceansat-3.[^isro-iocs-ocm3-2025] For buyers, the instrument is most relevant when medium-resolution ocean colour, wide-swath coverage and continuity with the Indian Oceansat data record are more important than hyperspectral channel density.

## Compositional position
- oceansat-3 (missions) --[mission_payloads]--> Ocean Color Monitor 3

## Sources
- [isro-eos-06] | EOS-06 mission page, ISRO | https://www.isro.gov.in/EOS_06.html | tier=agency-doc | accessed=2026-06-16
- [isro-iocs-ocm3-2025] | Ocean Colour Science and Applications at ISRO, IOCS 2025 | https://iocs.ioccg.org/wp-content/uploads/2025/12/AgencyTalk_ISRO_Nagamani.pdf | tier=agency-doc | accessed=2026-06-16
- [ceos-isro-2018] | ISRO CEOS Plenary 2018 presentation | https://ceos.org/document_management/Meetings/Plenary/32/presentations/4.3_ISRO_Kumar_v2.pdf | tier=agency-doc | accessed=2026-06-16

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Source: https://eo-atlas.org/products/sensor/ocm-3
Maintainer: SpectraWorks B.V. (CC-BY 4.0)